Patent US2600221A successfully refreshed from Google Patents.
US2600221A
Expired / Lapsed
US
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Cleansing method
Assignee: Individual
•
Filing: 1950-03-28
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Granted: 1952-06-10
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Expires: 1970-03-28
Abstract
No abstract record available.
Inventors
- 👤 Domingo Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:30
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF EXAMINING A SURFACE FOR VISUALLY UNDETECTABLE ORGANIC CONTAMINATION THAT INCLUDES THE STEPS OF TREATING THE SURFACE WITH AN EXCESS OF CHEMICAL SOLUTION THAT IS SELECTIVELY SORBED BY THE ORGANIC CONTAMINATION AND RINSING THE SURFACE TO REMOVE THE EXCESS SOLUTION NOT SORBED TO CAUSE SAID CONTAMINATION TO BECOME VISUALLY EVIDENT AND DISTINCT FROM PORTIONS OF THE SURFACE NOT SO CONTAMINATED WHEN EXPOSED TO AN APPROPRIATE LIGHT BAND.
Claim 2
Independent Claim
69 words
THE METHOD OF EXAMINING A SURFACE FOR VISUALLY UNDETECTABLE ORGANIC CONTAMINATION THAT INCLUDES THE STEPS OF TREATING THE SURFACE WITH AN EXCESS OF CHEMICAL SOLUTION THAT IS SELECTIVELY SORBED BY THE ORGANIC CONTAMINATION AND RINSING THE SURFACE TO REMOVE THE EXCESS SOLUTION NOT SORBED TO CAUSE SAID CONTAMINATION TO BECOME VISUALLY EVIDENT AND DISTINCT FROM PORTIONS OF THE SURFACE NOT SO CONTAMINATED WHEN EXPOSED TO AN APPROPRIATE LIGHT BAND.
References Cited (Backward Citations)
US2046940A
Cited
US2449274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |